Your need to post at least 1 post in threads and wait 30 mins or your account needs to be 24 hours old before you can create a thread. See the FAQ thread for more info~ https://forum.novelupdates.com/threads/nu-nuf-frequently-asked-questions.62709/
No worries. Just comment in some threads and wait half an hour to an hour. You should be fine after than~
Comments on Profile Post by Tsuki_1212